An all new, automated version of the PEGASUS software has been developed and tested. PEGASUS provides the hole-cutting and connectivity information between overlapping grids, and is used as the final part of the grid generation process for overset-grid computational fluid dynamics approaches. The new PEGASUS code (Version 5) has many new features: automated hole cutting; a projection scheme for fixing gaps in overset surfaces; more efficient interpolation search methods using an alternating digital tree; hole-size optimization based on adding additional layers of fringe points; and an automatic restart capability. The new code has also been parallelized using the Message Passing Interface standard. The parallelization performance provides efficient speed-up of the execution time by an order of magnitude, and up to a factor of 30 for very large problems. The results of three example cases are presented: a three-element high-lift airfoil, a generic business jet configuration, and a complete Boeing 777-200 aircraft in a high-lift landing configuration. Comparisons of the computed flow fields for the airfoil and 777 test cases between the old and new versions of the PEGASUS codes show excellent agreement with each other and with experimental results.
PEGASUS 5: An Automated Pre-Processor for Overset-Grid CFD
AIAA Fluid Dynamics Conference ; 2002 ; Saint Louis, MO, United States
2002-01-01
Preprint
No indication
English
PEGASUS 5: AN AUTOMATED PRE-PROCESSOR FOR OVERSET-GRID CFD
British Library Conference Proceedings | 2002
|FLUID DYNAMICS - PEGASUS 5: An Automated Preprocessor for Overset-Grid Computational Fluid Dynamics
Online Contents | 2003
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